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GRAIN SEPARATOR AND GRADER.

N0.576,99o. D PatentedPeb.9,1897.

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GRAIN SEPARATOR AND GRADBR.

YNo. 576,990.

Patented Feb. 9, 1897.

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UNITED STATES PATENT OEEICE SAMUEL BARNES, OF LOVELAND, COLORADO,ASSIGNOR OF ONE-HALF TO DAVID BARNES, OF SAME PLACE.

`GRAIN SEPARATOR AND GRADER.

SPECIFICATION forming part of Letters Patent No. 576,990, dated February9, 1897.

` Application filed May 5,1896. .Serial No. 590,360. (No moclell To a/ZZwhom it may concern:

Be it known that I, SAMUEL BARNES, a citizen of the United States ofAmerica, residing at Loveland, in t-he county of Larimer and State ofColorado, have invented certain new and useful Improvements in GrainSeparators and Graders; and I do declare the following to be a full,clear, and exact description of the invention, suchaswill enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters andfigures of reference marked thereon, which form a part of thisspecification.

My invention relates to improvements in grain-separators speciallyadapted for separating oats (both common .and wild) from wheat and othergrains; and to this end the invention consists of the features,arrangements, and combinations hereinafter de` scribed and claimed, allof which will be fully understood by reference to the accompanyingdrawings, in which is illustrated an embodiment thereof.

In the drawings, Figure l is a side elevation of the machine. Fig. 2 isa top or plan view of the same. Fig. 3 is a fragmentary top view withthe table removed to show the mechanism underneath. Fig. 4L is a similarView with the table in place. Fig. 5 is a section taken on Vthe line xx, Fig. 4. Fig. 6 is a section taken on the line 'y y, Fig. et. Fig. 7is a detail of construction, the parts being shown on a larger scale.Fig. 8 is a section taken through the worm-shaft on the line e z, Fig.3. Fig. 9 is a section taken through the lower edge ofthe apron toillustrate-the flap protecting the lower propelling-chain.

Similar reference-characters indicating corresponding parts in theviews, let the `numeral 5 designate a suitable frame upon which ismounted an inclined table 6, surrounded by an endless apron 7, propelledby drums 8, journaled inthe frame. This apron consists of a blanketcomposed of fibrous fabric or any other suitable material to which theoats will adhere. The apron has a movement in a direction at rightangles to the inclination of the table. The tables inclination ispreferably at an angle of about forty-five degrees.

' Attached to the frame and projecting a short distance above the apronare two parallel bars 9, suitably separated. To the bars 9 are attachedslats l2. The extremities of the slats are made fast to the bars. To theslats are attached flaps 10, composed of some suitable {iexible'materiaL tremities of the liaps engage the top of the apron. The flapsand their supporting-slats preferably occupy a diagonal position withreference to the aprons movement. The movement of the apron is in thedirection indicated by the arrows. (See Fig. l.)

The grain to be treated is fed. upon the upper left-hand corner of theapron farther to the right, (referring to Fig. 1.) As the apron movesforward, or in the direction indicated by the arrows, the wheat, whichis heavier, rolls downward in a direction transverse to theapronlsmovement, passes under the flaps lO, and finally falls from the loweredge of the apron into a suitable receptacle 30. The oats naturallycling to the apron, but if it were not for the flaps the wheat wouldcarry some oats downward with it and prevent the obtaining of the mostsatisfactory results. Hence while the flaps allow the wheat to passunder them they cause the oats to cling more tenaciously to the apron,and thus prevent any oats from escaping with the wheat which falls fromthat part of the apron engaged by the aps. These flaps engage thegreater portion of the aprons upper surface. Let A designate saidportion, and B the portion of the apron forward or beyond the flaps. Thewheat which falls from the part A of the apron is free from oats. Somewheat, however, passes to the part B of the apron and would be carriedover with the tailings were it not for the agitating devices placed ontop of the table and located between the Hap-supporting frame and theforward end drum. These devices consist of two slats 13 and 14, locatedbeneath the apron and occupying a position transverse to the apronsmovement. The upper extremities of these slats are fastened to the tableor to the framework, while their lower extremities are free and projectslightly beyond the lower edge of the table.

Beneath thetable and fulcrumed on the The lower ex- IOO frame at 15 is alever 1G, whose upper extremity isY engaged'by a double cam 17. To thelower extremity of thisvlever is attached an upwardly-projecting pin 18,adapted to engage the lower extremity of the agitator 13. The pin 1Spasses through a stop 19. Between this stop and the end of the lever islocated a coil-spring 20. As the cam 17 depresses the upper extremity ofthe lever 16 the lower end of said lever is raised, thus bringing theupper end of the pin 1S in contact with the agitator 18. This movementof the lever compresses the spring, and as soon as the cam releases theupper end of the lever the recoil of the spring returns the lever to itsnormal position. The slat 14 is actuated through the intervention of ashort lever 2-1, ffulcrumed at 22. One end this lever 21 occupies: aposition below and in contact with the-lower extremity of the lever 16,while its opposite extremity engages the lower extremity of theagitating-slat 14. As the lower extremity of the lever 1G moves downwardunder the influence of the spring, as heretofore explained, it throwsthe opposite eX- tremity of the lever 2l upward and movesthe'agitating-slat 14 accordingly. Thus the two slats 13 and 14 arealternately raised and lowered underneath and in contact with themovingapron. In this manner the part B of the apron is kept in suoli astate of vibration that the wheat which has been carried forward beyondthe flaps 12 is made to roll downward into' an auxiliary receptacle 23.This vibration, caused by the agitating devices, causessome oats also toleave the apron with the wheat. I-Ience the contents of the auxiliaryreceptacle are returned via a carrier 24 and discharged into'thesupply-bin 25 for retreatment. The grain to be cleaned or separated fromthe oats is originally discharged intotheA bin 25 and carried thence viaan elevator 26and discharged intoI the hopper 27 via' a` chute 2S. Fromthence it is fed'to the apronthrough the instrumentality of a suitablefeed-roll 29.

The portion of the machine nearest the top ofthe sheet in Fig. 2 may bedesignated the rear. Bearing this in mind the grain, when it leaves thehopper, is discharged upon that portion of the apron passing over theupper left-hand corner of the table farther to the rear.

The power for propelling the machine may be obtained from any suitablemotor. As shown-in the drawings, a belt 31 leads from the motor to apulley 32 on a shaft 33. A sprocket-wheel on the shaft is connected bymeans of a chain 34 with another sprocket on a shaft 35. This last-namedshaft carries a worm 3G, engaging a gear 87, fast on the upper journalofl the forward drum S. The drums 8 carry sprockets 39, which areengaged by thel chains 88, attached to the edges of the apron. The lowerchain is concealed by'a flapV 7 attached to the apron te prevent thechain from interfering with the grain as it falls into the receptacles30 and 23. I'Ience the apron is slowly propelled through theinstrumentality of the worm-gear. A crossed belt 40 connects a pulley onthe shaft 33 with another pulley on a shaft 41. This lastnamed shaft)carries a gear 42, meshing with another gear 43 on the journal of thefeed roller 29. A belt 44 connects a pulley on the shaft 33 with anotherpulley on the upper journal of the elevator 2G. The carrier 24 ispropelled by means of a belt 45 leading from a pulley on the shaft 33 toa pulley 46 on one journal of the elevator.

Underneath the endless apron is a reel 47, suitably journaled in thestationary frame. The slats 47n of this reel engage the apron underneathand remove all the oats which adhere thereto. There is a bevel-gearconnection 49 between the shaft 33 and the shaft 47 c of the reel foroperating the latter.

My improved :machine is a grader as well as a separator, since all thecrackedvkernels, as well as those that are shrunken and worthless forany reason, are carriedover by the apron and discharged with thetailings, since they are not of sufficient specific gravity't'o causethem to roll down under the flaps 10 into the receptacle 30.

Having thus described my invention, what I claim is- 1. In agrain-separator, the combination with a suitable frame, of aninclined'table mounted thereon, the drums journaled in the frame at theends of the table,` an endless apron surrounding the table and engagingthe drums, said apron having amovement transverse to the inclination ofthe table, flaps supported above and engaging the apron and occupyingadiagonal position with reference to its direction of movement, anagitating device supported on the table underneath the apron, saiddevice being located between the iiaps and the forwardend drum, meansfor feeding the grainv to the apron, and means for propelling thelatter, substantially as described.

2. In a grain-separator, the combination with a suitable frame, of aninclined table mounted thereon, an endless apron surrounding the table,means for propelling the apron `in a direction at right angles to theinclination of the table, the flaps suitably supported above andengaging the apron, an agitating device supported on the tableunderneath the apron, said device being located between the iiaps andthe forward end drum, the reelunderneath the apron, and suitable meansyfor feeding the grain to the apron,` substantially as described.

3. In a grain-separator, the combination with a suitable frame, of theinclined table sup- IOO IIO

ported thereon, an endless apron surrounding the table, means forpropelling-'the apron in a direction at right angles to the inclinationof the table, the flaps supported above and engaging the apron, andanagitating device supported on the table underneath the apron, saiddevice being located between the flaps and the forward end drum,substantially as described.

4. In a grain-separator, the combination with a suitable frame, of theinclined table mounted thereomthe endless apron surrounding the table,means for propelling the apron in a direction at right angles to theinclination of the table, an agitating device supported on top of thetable and underneath A the apron, the upper extremity of said devicebeing made fast while its lower extremity is loose, and means foractuating said device,

. comprising a lever fnlcrumed on the frame,

